If toggling behavior is selected for the AF/MF button, the transitions are similar. If the selection you made in the menu is either AF or DMF, you toggle to AF, and if you toggle again, you return to the focusing method you selected in the menu. If the selection you made in the menu is MF, you toggle to AF, and if you toggle again, you return to MF.

There is a mistake in what I wrote there. Should be "If the selection you made in the menu is either AF or DMF, you toggle to MF"